Specifications

Abbreviated source title: Guangdianzi Jiguang
Volume: 24
Issue: 5
Issue date: May 2013
Publication year: 2013
Pages: 855-861
Language: Chinese
ISSN: 10050086
CODEN: GUJIE9
Document type: Journal article (JA)
Publisher: Board of Optronics Lasers, No. 47 Yang-Liu-Qing Ying-Jian Road, Tian-Jin City, 300380,
China
Abstract: A photoelectric detection system based on photon counting technique is designed
using photomultiplier tube (PMT) for solving the detectable problem of the ultra-weak light level
in all-fiber rotational Raman lidar. In order to improve the stability of the single photon pulse and
the reliability of discrimination counting, the single photon pulse waveform is reshaped by
impedance matching technique, and then the optimum selections of operational parameters
such as PMT high-voltage power supply, discrimination threshold level are mainly discussed
through testing pulse height distribution in differential method, so its signal-to-noise ratio is
enhanced. The experimental testing system possessing the relative optical intensity changeability
with certainty is configured, and then the action type of pulse pileup effect and the effective
dead time in this system are experimentally tested based on pulse pileup non-linear analysis
model of Poisson point process, so the reasonable nonlinearity correction may be adopted to
improve its linearity. Experiment results show that this photoelectric detection system can
implement the detection of weak optical signal whose photon counting rate is less than 140 MHz,
and its linearity is better than 1.0%. The optimized and provided experimental schemes are
significant for the photoelectric detection system of this type.
Number of references: 20
Main heading: Photoelectricity
Controlled terms: Atmospheric optics - Optical radar - Particle beams - Photons
Uncontrolled terms: Discrimination thresholds - High voltage power supply - Impedance
matching technique - Nonlinearity correction - Photoelectric detection systems -
Photon counting - Pulse height distribution - Rotational Raman lidar
Classification code: 716.2 Radar Systems and Equipment - 741.1 Light/Optics - 932.1
High Energy Physics
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.
5.
Accession number: 20132416414706
Title: Experimental research on size effect of magnetic hysteresis loop for Q235 steel
Authors: Li, Ai Guo1, 2 ; Zhao, Jun Hai1 ; Xiong, Er Gang1/李爱国;赵俊海;
Author affiliation: 1 School of Civil Engineering, Chang'an University, Xi'an 710061, China
2 School of Civil Engineering and Architecture, Xi'an University of Technology, Xi'an 710048,